11212100002120 has 32 divisors (see below), whose sum is σ = 25228688412600. Its totient is φ = 4484579839488.

The previous prime is 11212100002109. The next prime is 11212100002127. The reversal of 11212100002120 is 2120000121211.

It can be written as a sum of positive squares in 4 ways, for example, as 5511685899204 + 5700414102916 = 2347698^2 + 2387554^2 .

It is a super-2 number, since 2×11212100002120² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11212100002120.

It is not an unprimeable number, because it can be changed into a prime (11212100002127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7431135 + ... + 8811694.

Almost surely, 2^{11212100002120} is an apocalyptic number.

11212100002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212100002120 is an abundant number, since it is smaller than the sum of its proper divisors (14016588410480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11212100002120 is a wasteful number, since it uses less digits than its factorization.

11212100002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16260097 (or 16260093 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11212100002120 its reverse (2120000121211), we get a palindrome (13332100123331).

The spelling of 11212100002120 in words is "eleven trillion, two hundred twelve billion, one hundred million, two thousand, one hundred twenty".